diff --git a/package-lock.json b/package-lock.json
index ef7c926..8efca76 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -366,22 +366,22 @@
       "dev": true
     },
     "clean-css": {
-      "version": "5.2.4",
-      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.2.4.tgz",
-      "integrity": "sha512-nKseG8wCzEuji/4yrgM/5cthL9oTDc5UOQyFMvW/Q53oP6gLH690o1NbuTh6Y18nujr7BxlsFuS7gXLnLzKJGg==",
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.3.0.tgz",
+      "integrity": "sha512-YYuuxv4H/iNb1Z/5IbMRoxgrzjWGhOEFfd+groZ5dMCVkpENiMZmwspdrzBo9286JjM1gZJPAyL7ZIdzuvu2AQ==",
       "dev": true,
       "requires": {
         "source-map": "~0.6.0"
       }
     },
     "clean-css-cli": {
-      "version": "5.5.2",
-      "resolved": "https://registry.npmjs.org/clean-css-cli/-/clean-css-cli-5.5.2.tgz",
-      "integrity": "sha512-4y5FD+ayRz7IWqZRCCMvFxNUhluc1Yv8mNPmrHbrm2NjKsv9uaQZedZKN4L+QMkTqANL1RfOwhpe22neDEgEMA==",
+      "version": "5.6.0",
+      "resolved": "https://registry.npmjs.org/clean-css-cli/-/clean-css-cli-5.6.0.tgz",
+      "integrity": "sha512-68vorNEG808D1QzeerO9AlwQVTuaR8YSK4aqwIsjJq0wDSyPH11ApHY0O+EQrdEGUZcN+d72v+Nn/gpxjAFewQ==",
       "dev": true,
       "requires": {
         "chokidar": "^3.5.2",
-        "clean-css": "^5.2.4",
+        "clean-css": "^5.3.0",
         "commander": "7.x",
         "glob": "^7.1.6"
       }
diff --git a/package.json b/package.json
index 8a40098..2e6b745 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
   "devDependencies": {
     "autoprefixer": "^10.4.4",
     "bulma": "^0.9.3",
-    "clean-css-cli": "^5.5.2",
+    "clean-css-cli": "^5.6.0",
     "copyfiles": "^2.4.1",
     "fontello-cli": "^0.6.2",
     "nodemon": "^2.0.15",